Re: [Discuss-gnuradio] Interesting performance observations on WX GUI FFT sink

[Stefan Gofferje]

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On 05/08/2011 11:50 PM, Marcus D. Leech wrote:
> I discovered rather by accident that if my FFT sinks had averaging
> turned *OFF*, that even at
>   modest input bandwidths on my dual-centrino laptop, they'd get wedged,
> even at relatively-low
>   FFT frame rates (3 for example).  But turn on averaging, and the
> systems resources required
>   were reduced to the point that the display could support FFT display.
>   I think this says something
>   about how (in) efficient OpenGL is about rendering even simple 2D
> objects that change dynamically.

I have similar observations but without any hardware. The WX FFT totally
locks my Athlon 64 3800+, when displaying.

Just signal source -> FFT sink.

BUT - only the WX FFT. The QT FFT seems rather reasonable in performance
demands.


- -- 
 (o_   Stefan Gofferje            | SCLT, MCP, CCSA
 //\   Reg'd Linux User #247167   | VCP #2263
 V_/_  Heckler & Koch - the original point and click interface
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